15d+25=4d-8

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Solution for 15d+25=4d-8 equation:


Simplifying
15d + 25 = 4d + -8

Reorder the terms:
25 + 15d = 4d + -8

Reorder the terms:
25 + 15d = -8 + 4d

Solving
25 + 15d = -8 + 4d

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '-4d' to each side of the equation.
25 + 15d + -4d = -8 + 4d + -4d

Combine like terms: 15d + -4d = 11d
25 + 11d = -8 + 4d + -4d

Combine like terms: 4d + -4d = 0
25 + 11d = -8 + 0
25 + 11d = -8

Add '-25' to each side of the equation.
25 + -25 + 11d = -8 + -25

Combine like terms: 25 + -25 = 0
0 + 11d = -8 + -25
11d = -8 + -25

Combine like terms: -8 + -25 = -33
11d = -33

Divide each side by '11'.
d = -3

Simplifying
d = -3

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